Specifications
Inner Diameter: 28.5 mm
Outer Diameter: 56.0 mm
Colour: Black
Material: Plastic
Shift Points: 2 bar
Weight [g]: 0.05 kg

How To Tell It Needs Replacement
The coolant expansion tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. This cap keeps all the heat and liquid inside the coolant system for maximum efficiency. Should be replaced each time major coolant system service is performed. Dress up your underhood and make everything functional with a new cap.

For the following vehicles
Vehicle Model year kW HP cc Design
3 (E36) 316 i 03.1991 - 08.1993 73 100 1596 Sedan
3 (E36) 316 i 09.1993 - 05.1998 75 102 1596 Sedan
3 (E36) 318 i 09.1990 - 08.1993 83 113 1796 Sedan
3 (E36) 318 i 09.1993 - 11.1998 85 115 1796 Sedan
3 (E36) 318 is 09.1993 - 12.1995 103 140 1796 Sedan
3 (E36) 318 is 01.1996 - 05.1998 103 140 1895 Sedan
3 (E36) 320 i 01.1991 - 02.1998 110 150 1991 Sedan
3 (E36) 323 i 05.1995 - 11.1998 125 170 2494 Sedan
3 (E36) 325 i 09.1990 - 12.1995 141 192 2494 Sedan
3 (E36) 328 i 01.1995 - 04.1998 142 193 2793 Sedan
3 (E36) M3 3.0 10.1994 - 07.1995 210 286 2990 Sedan
3 (E36) M3 3.2 10.1995 - 01.1998 236 321 3201 Sedan
3 Compact (E36) 316 i 01.1994 - 08.2000 75 102 1596 Hatchback
3 Compact (E36) 316 i 01.1999 - 08.2000 77 105 1895 Hatchback
3 Compact (E36) 316 g 02.1996 - 08.2000 75 102 1596 Hatchback
3 Compact (E36) 318 ti 09.1994 - 12.1995 103 140 1796 Hatchback
3 Compact (E36) 318 ti 01.1996 - 08.1999 103 140 1895 Hatchback
3 Compact (E36) 323 ti 09.1997 - 08.2000 125 170 2494 Hatchback
3 Coupe (E36) 316 i 09.1993 - 11.1998 75 102 1596 Coupe
3 Coupe (E36) 318 is 01.1992 - 12.1995 103 140 1796 Coupe
3 Coupe (E36) 318 is 09.1995 - 04.1999 103 140 1895 Coupe
3 Coupe (E36) 320 i 12.1991 - 11.1998 110 150 1991 Coupe
3 Coupe (E36) 323 i 05.1995 - 04.1999 125 170 2494 Coupe
3 Coupe (E36) 325 i 10.1991 - 02.1995 141 192 2494 Coupe
3 Coupe (E36) 328 i 01.1995 - 04.1999 142 193 2793 Coupe
3 Coupe (E36) M3 3.0 11.1992 - 07.1995 210 286 2990 Coupe
3 Coupe (E36) M3 3.0 09.1993 - 05.1995 217 295 2990 Coupe
3 Coupe (E36) M3 3.2 10.1995 - 11.1998 236 321 3201 Coupe
3 Convertible (E36) 318 i 03.1994 - 11.1999 85 115 1796 Convertible
3 Convertible (E36) 320 i 12.1993 - 11.1999 110 150 1991 Convertible
3 Convertible (E36) 323 i 05.1995 - 11.1999 125 170 2494 Convertible
3 Convertible (E36) 325 i 03.1993 - 08.1995 141 192 2494 Convertible
3 Convertible (E36) 328 i 01.1995 - 11.1999 142 193 2793 Convertible
3 Convertible (E36) M3 3.0 04.1994 - 07.1995 210 286 2990 Convertible
3 Convertible (E36) M3 3.2 03.1996 - 09.1999 236 321 3201 Convertible
3 Touring (E36) 316 i 03.1997 - 05.1999 75 102 1596 Wagon
3 Touring (E36) 318 i 09.1995 - 04.1999 85 116 1796 Wagon
3 Touring (E36) 320 i 01.1995 - 04.1999 110 150 1991 Wagon
3 Touring (E36) 323 i 12.1995 - 04.1999 125 170 2494 Wagon
3 Touring (E36) 328 i 02.1995 - 04.1999 142 193 2793 Wagon
3 (E46) 316 i 04.2000 - 02.2005 77 105 1596 Sedan
3 (E46) 316 i 06.2002 - 02.2005 85 115 1596 Sedan
3 (E46) 316 i 02.2002 - 02.2005 85 115 1796 Sedan
3 (E46) 316 i 12.1998 - 02.2002 77 105 1895 Sedan
3 (E46) 318 i 12.1997 - 09.2001 87 118 1895 Sedan
3 (E46) 318 i 09.2001 - 02.2005 105 143 1995 Sedan
3 (E46) 320 i 03.1998 - 09.2000 110 150 1991 Sedan
3 (E46) 320 i 09.2000 - 02.2005 125 170 2171 Sedan
3 (E46) 323 i 03.1998 - 09.2000 125 170 2494 Sedan
3 (E46) 325 i 09.2000 - 02.2005 141 192 2494 Sedan
3 (E46) 325 xi 09.2000 - 02.2005 141 192 2494 Sedan
3 (E46) 328 i 02.1998 - 06.2000 142 193 2793 Sedan
3 (E46) 330 i 06.2000 - 02.2005 170 231 2979 Sedan
3 (E46) 330 xi 06.2000 - 02.2005 170 231 2979 Sedan
3 Compact (E46) 316 ti 06.2002 - 02.2005 85 115 1596 Hatchback
3 Compact (E46) 316 ti 06.2001 - 02.2005 85 115 1796 Hatchback
3 Compact (E46) 318 ti 03.2001 - 12.2004 105 143 1995 Hatchback
3 Compact (E46) 325 ti 04.2001 - 12.2004 141 192 2494 Hatchback
3 Coupe (E46) 316 Ci 04.2000 - 07.2006 77 105 1596 Coupe
3 Coupe (E46) 316 Ci 06.2002 - 07.2006 85 115 1596 Coupe
3 Coupe (E46) 318 Ci 12.1999 - 08.2001 87 118 1895 Coupe
3 Coupe (E46) 318 Ci 12.2000 - 05.2006 105 143 1995 Coupe
3 Coupe (E46) 318 Ci 03.2005 - 07.2006 110 150 1995 Coupe
3 Coupe (E46) 320 Ci 02.1999 - 08.2001 110 150 1991 Coupe
3 Coupe (E46) 320 Ci 01.2000 - 05.2006 125 170 2171 Coupe
3 Coupe (E46) 323 Ci 04.1999 - 09.2000 125 170 2494 Coupe
3 Coupe (E46) 325 Ci 09.2000 - 05.2006 141 192 2494 Coupe
3 Coupe (E46) 328 Ci 12.1998 - 05.2000 142 193 2793 Coupe
3 Coupe (E46) 330 Ci 06.2000 - 05.2006 170 231 2979 Coupe
3 Coupe (E46) M3 07.2000 - 05.2006 252 343 3246 Coupe
3 Coupe (E46) M3 06.2003 - 07.2006 265 360 3246 Coupe
3 Convertible (E46) 318 Ci 09.2001 - 12.2007 105 143 1995 Convertible
3 Convertible (E46) 318 Ci 02.2005 - 12.2007 110 150 1995 Convertible
3 Convertible (E46) 320 Ci 09.2000 - 12.2007 125 170 2171 Convertible
3 Convertible (E46) 323 Ci 04.2000 - 09.2000 125 170 2494 Convertible
3 Convertible (E46) 325 Ci 09.2000 - 08.2006 141 192 2494 Convertible
3 Convertible (E46) 330 Ci 06.2000 - 08.2006 170 231 2979 Convertible
3 Convertible (E46) M3 03.2001 - 08.2006 252 343 3246 Convertible
3 Touring (E46) 316 i 03.2002 - 02.2005 85 115 1796 Wagon
3 Touring (E46) 318 i 10.1999 - 09.2001 87 118 1895 Wagon
3 Touring (E46) 318 i 09.2001 - 02.2005 105 143 1995 Wagon
3 Touring (E46) 320 i 10.1999 - 09.2000 110 150 1991 Wagon
3 Touring (E46) 320 i 09.2000 - 02.2005 125 170 2171 Wagon
3 Touring (E46) 325 i 09.2000 - 02.2005 141 192 2494 Wagon
3 Touring (E46) 325 xi 09.2000 - 02.2005 141 192 2494 Wagon
3 Touring (E46) 328 i 06.1999 - 05.2000 142 193 2793 Wagon
3 Touring (E46) 330 i 06.2000 - 02.2005 170 231 2979 Wagon
3 Touring (E46) 330 xi 06.2000 - 02.2005 170 231 2979 Wagon
5 (E34) 518 i 09.1989 - 04.1994 83 113 1796 Sedan
5 (E34) 518 i 05.1994 - 08.1995 85 115 1796 Sedan
5 (E34) 520 i 06.1987 - 09.1990 95 129 1990 Sedan
5 (E34) 520 i 24V 04.1990 - 08.1995 110 150 1991 Sedan
5 (E34) 525 i 02.1988 - 08.1990 125 170 2494 Sedan
5 (E34) 525 i 24V 03.1990 - 12.1995 141 192 2494 Sedan
5 (E34) 525 iX 24V 10.1991 - 08.1995 141 192 2494 Sedan
5 (E34) 530 i 01.1988 - 04.1990 138 188 2986 Sedan
5 (E34) 530 i V8 09.1992 - 12.1995 160 218 2997 Sedan
5 (E34) 535 i 11.1987 - 02.1993 155 211 3430 Sedan
5 (E34) M5 09.1988 - 03.1992 232 315 3535 Sedan
5 (E34) M5 01.1992 - 07.1995 250 340 3795 Sedan
5 Touring (E39) 528 i 11.1996 - 08.2000 142 193 2793 Wagon
5 Touring (E39) 530 i 09.2000 - 12.2003 170 231 2979 Wagon
5 Touring (E39) 540 i 04.1997 - 12.2003 210 286 4398 Wagon
5 (F10) 523 i 06.2009 - 08.2011 150 204 2996 Sedan
5 (F10) 528 i 03.2010 - 08.2011 190 258 2996 Sedan
5 (F10) 530 i 05.2011 - 06.2013 200 272 2996 Sedan
5 (F10) 550 i 07.2013 - 10.2016 330 449 4395 Sedan
5 (F10) M5 09.2011 - 10.2016 412 560 4395 Sedan
5 Touring (F11) 523 i 11.2009 - 08.2011 150 204 2996 Wagon
5 Touring (F11) 528 i 11.2009 - 08.2011 190 258 2996 Wagon
5 Touring (F11) 530 i 07.2011 - 06.2013 200 272 2996 Wagon
7 (E32) 730 i,iL 07.1986 - 03.1994 138 188 2986 Sedan
7 (E32) 730 i,iL 12.1986 - 09.1994 145 197 2986 Sedan
7 (E32) 730 i,iL V8 04.1992 - 09.1994 160 218 2997 Sedan
7 (E32) 735 i,iL 06.1986 - 06.1992 155 211 3430 Sedan
7 (E32) 735 i,iL 09.1986 - 12.1987 162 220 3430 Sedan
7 (E32) 740 i,iL V8 05.1992 - 03.1994 210 286 3982 Sedan
7 (E32) 750 i,iL V12 09.1987 - 09.1994 220 300 4988 Sedan
7 (E38) 728 i, iL 08.1995 - 11.2001 142 193 2793 Sedan
7 (E38) 730 i, iL 10.1994 - 11.2001 155 211 2997 Sedan
7 (E38) 730 i, iL 03.1994 - 02.1996 160 218 2997 Sedan
7 (E38) 735 i, iL 03.1996 - 08.1998 173 235 3498 Sedan
7 (E38) 740 i, iL 03.1994 - 02.1996 210 286 3982 Sedan
7 (E38) 740 i, iL 02.1996 - 07.2001 210 286 4398 Sedan
7 (E38) 750 i, iL 11.1994 - 07.2001 240 326 5379 Sedan
5 (E34) 540 i V8 09.1992 - 12.1995 210 286 3982 Sedan
5 Touring (E34) 518 i 04.1993 - 04.1994 83 113 1796 Wagon
5 Touring (E34) 518 i 05.1994 - 07.1996 85 115 1796 Wagon
5 Touring (E34) 518 g 02.1996 - 07.1996 85 115 1796 Wagon
5 Touring (E34) 520 i 07.1991 - 07.1996 110 150 1991 Wagon
5 Touring (E34) 525 i 07.1991 - 07.1996 141 192 2494 Wagon
5 Touring (E34) 525 ix 01.1992 - 03.1996 141 192 2494 Wagon
5 Touring (E34) 530 i 09.1992 - 07.1996 160 218 2997 Wagon
5 Touring (E34) 540 i 09.1993 - 07.1996 210 286 3982 Wagon
5 Touring (E34) M5 04.1992 - 07.1995 250 340 3795 Wagon
5 (E39) 520 i 01.1996 - 06.2003 100 136 1991 Sedan
5 (E39) 520 i 01.1996 - 06.2003 110 150 1991 Sedan
5 (E39) 520 i 09.2000 - 06.2003 125 170 2171 Sedan
5 (E39) 523 i 09.1995 - 08.2000 125 170 2494 Sedan
5 (E39) 525 i 09.2000 - 06.2003 141 192 2494 Sedan
5 (E39) 528 i 09.1995 - 08.2000 142 193 2793 Sedan
5 (E39) 530 i 09.2000 - 06.2003 170 231 2979 Sedan
5 (E39) 535 i 06.1996 - 08.1998 173 235 3498 Sedan
5 (E39) 535 i 09.1998 - 06.2003 180 245 3498 Sedan
5 (E39) 540 i 03.1996 - 06.2003 210 286 4398 Sedan
5 (E39) M5 10.1998 - 06.2003 294 400 4941 Sedan
5 Touring (E39) 520 i 03.1997 - 08.2001 100 136 1991 Wagon
5 Touring (E39) 520 i 03.1997 - 08.2001 110 150 1991 Wagon
5 Touring (E39) 520 i 09.2000 - 12.2003 125 170 2171 Wagon
5 Touring (E39) 525 i 09.2000 - 05.2004 141 192 2494 Wagon
7 (E65, E66, E67) 730 i, Li 03.2003 - 07.2008 170 231 2979 Sedan
7 (E65, E66, E67) 730 i, Li 03.2005 - 07.2008 190 258 2996 Sedan
7 (E65, E66, E67) 735 i, Li 11.2001 - 02.2005 200 272 3600 Sedan
7 (E65, E66, E67) 740 i, Li 03.2005 - 08.2008 225 306 4000 Sedan
7 (E65, E66, E67) 745 i, Li 07.2001 - 03.2005 245 333 4398 Sedan
7 (E65, E66, E67) 750 i, Li 03.2005 - 08.2008 270 367 4799 Sedan
7 (E65, E66, E67) 760 i, Li 01.2003 - 08.2008 327 445 5972 Sedan
8 (E31) 840 i 03.1993 - 02.1996 210 286 3982 Coupe
8 (E31) 840 Ci 03.1996 - 06.1999 210 286 4398 Coupe
8 (E31) 850 i,Ci 01.1990 - 08.1994 220 300 4988 Coupe
8 (E31) 850 Ci 09.1994 - 12.1999 240 326 5379 Coupe
8 (E31) 850 CSi 11.1992 - 12.1996 280 380 5576 Coupe
X3 (E83) 2.0 i
Transmission Type: Manual Transmission
More information 110 150 1995 Closed Off-Road Vehicle
X3 (E83) xDrive 20 i
Transmission Type: Manual Transmission
More information 110 150 1995 Closed Off-Road Vehicle
X3 (E83) 2.5 i 03.2004 - 07.2006 141 192 2494 Closed Off-Road Vehicle
X3 (E83) xDrive 25 i 09.2008 - 08.2010 160 218 2497 Closed Off-Road Vehicle
X3 (E83) 3.0 i xDrive 09.2003 - 07.2006 170 231 2979 Closed Off-Road Vehicle
X3 (E83) xDrive 30 i 09.2008 - 08.2010 200 272 2996 Closed Off-Road Vehicle
X5 (E53) 3.0 i 06.2000 - 12.2006 168 228 2979 Closed Off-Road Vehicle
X5 (E53) 3.0 i 04.2000 - 10.2006 170 231 2979 Closed Off-Road Vehicle
X5 (E53) 4.4 i 01.2000 - 09.2003 210 286 4398 Closed Off-Road Vehicle
X5 (E53) 4.4 i 10.2003 - 10.2006 235 320 4398 Closed Off-Road Vehicle
X5 (E53) 4.6 is 10.2001 - 09.2003 255 347 4619 Closed Off-Road Vehicle
X5 (E53) 4.8 is 04.2004 - 09.2006 265 360 4799 Closed Off-Road Vehicle
Z3 Roadster (E36) 1.8 i 10.1995 - 10.1998 85 116 1796 Convertible
Z3 Roadster (E36) 1.9 i 01.1999 - 01.2003 85 116 1895 Convertible
Z3 Roadster (E36) 1.9 i 07.1998 - 01.2003 87 118 1895 Convertible
Z3 Roadster (E36) 1.9 i 11.1995 - 03.1999 103 140 1895 Convertible
Z3 Roadster (E36) 2.0 i 04.1999 - 01.2003 110 150 1991 Convertible
Z3 Roadster (E36) 2.2 i 10.2000 - 06.2002 125 170 2171 Convertible
Z3 Roadster (E36) 2.8 i 11.1996 - 05.2000 142 193 2793 Convertible
Z3 Roadster (E36) 3.0 i 06.2000 - 01.2003 170 231 2979 Convertible
Z3 Roadster (E36) M 3.2 01.1997 - 06.2000 236 321 3201 Convertible
Z3 Roadster (E36) M 3.2 06.2001 - 01.2003 239 325 3246 Convertible
Z3 Coupe (E36) 2.8 i 07.1997 - 06.2000 142 193 2793 Coupe
Z3 Coupe (E36) 3.0 i 06.2000 - 06.2003 170 231 2979 Coupe
Z3 Coupe (E36) M 02.1998 - 06.2001 236 321 3201 Coupe
Z3 Coupe (E36) M 06.2001 - 06.2003 239 325 3246 Coupe
Z4 Roadster (E85) 2.0 i 03.2005 - 02.2009 110 150 1995 Convertible
Z4 Roadster (E85) 2.2 i 10.2003 - 10.2005 125 170 2171 Convertible
Z4 Roadster (E85) 2.5 i 02.2003 - 12.2005 141 192 2494 Convertible
Z4 Roadster (E85) 2.5 i 09.2005 - 02.2009 130 177 2497 Convertible
Z4 Roadster (E85) 2.5 si 01.2006 - 08.2008 160 218 2497 Convertible
Z4 Roadster (E85) 3.0 i 09.2002 - 12.2005 170 231 2979 Convertible
Z4 Roadster (E85) 3.0 si 01.2006 - 08.2008 195 265 2996 Convertible
Z4 Roadster (E85) M 01.2006 - 08.2008 252 343 3246 Convertible
Z4 Coupe (E86) 3.0 si 04.2006 - 08.2008 195 265 2996 Coupe
Z4 Coupe (E86) M 04.2006 - 08.2008 252 343 3246 Coupe
Z8 Roadster (E52) 4.9 06.2000 - 06.2003 294 400 4941 Convertible